Setup NAudioSystem

local maxw, maxh = term.getSize()
function clear()
    term.clear()
    term.setCursorPos(1, 1)
    term.setBackgroundColour(colours.black)
    term.setTextColor(colors.white)
end
function colore(sfumatura) term.setTextColour(sfumatura) end
function fineColore() term.setTextColour(colours.white) end
function sfondo(sfumaturaSfondo) term.setBackgroundColour(sfumaturaSfondo) end
function fineSfondo() term.setBackgroundColour(colours.black) end

-- IMPLEMENTAZIONE DEL DRAWFILLEDBOX
local function drawPixelInternal(xPos, yPos)
    term.setCursorPos(xPos, yPos)
    term.write(" ")
end
local tColourLookup = {}
for n = 1, 16 do
    tColourLookup[string.byte("0123456789abcdef", n, n)] = 2 ^ (n - 1)
end
function drawFilledBox(startX, startY, endX, endY, nColour)
    if type(startX) ~= "number" or type(startX) ~= "number" or type(endX) ~=
        "number" or type(endY) ~= "number" or
        (nColour ~= nil and type(nColour) ~= "number") then
        error("Expected startX, startY, endX, endY, colour", 2)
    end

    startX = math.floor(startX)
    startY = math.floor(startY)
    endX = math.floor(endX)
    endY = math.floor(endY)

    if nColour then term.setBackgroundColor(nColour) end
    if startX == endX and startY == endY then
        drawPixelInternal(startX, startY)
        return
    end

    local minX = math.min(startX, endX)
    if minX == startX then
        minY = startY
        maxX = endX
        maxY = endY
    else
        minY = endY
        maxX = startX
        maxY = startY
    end

    for x = minX, maxX do for y = minY, maxY do drawPixelInternal(x, y) end end
end

function titolo(testo)
    drawFilledBox(1, 1, maxw, 1, colors.red)
    term.setCursorPos((maxw - #testo) / 2, 1)
    colore(colors.white)
    term.write(testo)
    sfondo(colors.blue)
end
while true do
sfondo(colors.blue)
clear()
titolo("Installazione N AUDIO SYSTEM")
print("\n\n")
print("Si sta eseguendo GEM su questo computer?")
print("\n1. Si\n2. No\n")
local isGem = read()
if isGem == "1" then
shell.run("rm /programs/icons/NPlayer")
shell.run("rm /programs/NPlayer")
shell.run("pastebin get Ei4HDiwy /programs/icons/NPlayer")
shell.run("pastebin get TyTyYRQd /programs/NPlayer")
clear()
titolo("Installazione N AUDIO SYSTEM")
print("\n\n")
print("Installazione completata. Rimuovere il disco.")
os.pullEvent("disk_eject")
os.reboot()
elseif isGem == "2" then
shell.run("pastebin get TyTyYRQd /NPlayer")
clear()
titolo("Installazione N AUDIO SYSTEM")
print("\n\n")
print("Installazione completata.\nPer eseguire N Audio System, digitare nel terminale:\nnplayer\nRimuovere il disco.")
os.pullEvent("disk_eject")
os.reboot()
else
clear()
titolo("Installazione N AUDIO SYSTEM")
print("\n\n")
print("Scelta non valida")
sleep(1)
end
end